Definition of First Cause in English:

noun

As an alternative, deism posited an impersonal First Cause whose rationality is reflected in physical laws and human intellect, and lauded the exercise of virtue and reason as the truest form of worship.

In Suarez's view, God was the same kind of being his creatures are, only infinite rather than finite in scale; the First Cause was the same kind of cause as a worldly cause, only first.

Subsequently, those who sought to use Aristotle's philosophical scheme for theological purposes usually added an additional First Cause to the four Aristotelian Causes.